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Pump Magnetic Couplings consist of an outer and inner drive and they do not touch one another. A coupling works via the non-contact transfer of power which means the magnetic solution, in contrast to the traditional, does not experience any wear. Therefore, the Magnetic Couplings are maintenance-free.
It’s possible to place a can between the two rotating units so that two different media can be kept separate. With the hermetic enclosure of the coupling in a stainless steel housing, corrosion is avoided and the coupling can operate directly as a wet runner in different liquids and environments. The outer drive is normally connected to the drive unit and the inner drive is, for example, connected to a pump.
What are magnetic couplings?
In a magnetic drive pump, the pumping element and fluid are contained within a hermetically sealed housing. The drive shaft from the motor rotates an assembly of magnets on the outside of the housing. Opposing this, on the inside of the housing, is a matching ring of magnets on the pump shaft (Figure 1). Torque is transferred through the housing as a result of the coupled magnets. The most important advantage of a magnetic coupling is that it allows the transmission of torque through a barrier without the use of rotating seals, along with the associated problems of leakage, potential contamination and continual maintenance.
Magnetic drives are available for rotodynamic centrifugal, turbine and side-channel pumps and positive displacement pumps including vane pumps, internal gear pumps, and external gear pumps and the basic principles and advantages are the same: the pumped fluid is contained within a hermetically sealed housing – the containment shell – eliminating the risk of leakage.
HangSeng Magnetech Magnetic couplings are high-quality products with an extremely long service life, no maintenance and high torque transfer. They are primarily used in three different ways
1st, to transfer mechanical work to a sealed container;
2nd, to reduce the load on connected bearing systems;
3rd, as a torque limiter in, for example, gearboxes.
Advantages of Magnetic Coupling Axel Hole Type
• Long service life
• Corrosion-free materials
• High torque transfer at limited volume
• Option of 100% sealed system
• Option of separating media
• High-temperature solutions
• Optional number of pole pairs